I bought the Rumor Touch a couple of weeks ago from Virgin Mobile, and ever since I couldn't get it to vibrate. I have it set to "Vibrate only", I tried to set up up using the volume control on the side, I tried going through settings, and nothing has worked. I never know when I get a text or anything, it's seems to be in a permanent silent mode. I know for a fact the hardware that makes it vibrate works. What can I do?